A new advancement in lower-carbon heating and cooling technology addresses one of the primary upgrade constraints associated with simultaneous four-pipe heat pump–chiller systems. The A-Combo R290 range can now deliver heating output temperatures of up to 80°C, broadening its suitability for retrofit projects where elevated water temperatures are required. Addressing https://purethermal.co.uk/media-news/retrofit-heat-pump-chiller-applications-with-80c-output-capability/